YINUO YN-COB100 COB absorptivity Tester paper surface absorption weight Tester COBB method 100cm ²

use

Paper and cardboard absorbency Tester is a conventional instrument for water absorption test of paper and cardboard surface, also known as paper surface absorption weight Tester. This instrument uses the Cobb test method among various methods of absorption test, so it is also called the Cobb absorbability Tester.

This instrument is mainly used to determine the surface water absorption of sized paper and paperboard including corrugated board. This instrument only measures the water absorption of paper and cardboard surface, but it is not suitable for accurately evaluating the writing performance of paper or cardboard.

The definition of paper and cardboard surface water absorption (Cobb) value: the amount of water absorbed by the surface of paper and cardboard per unit area under certain pressure and temperature within a specified time, in g/㎡. The specific formula is as follows: C=(G2-G1)×100.

In the formula: C —— water absorption value;

G2 - the mass of the sample weighed after absorbing water;

G1——The mass of the sample weighed out before absorbing water.

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[Note] Because the manufacturer's packaging may be updated or upgraded, the detailed packaging list shall be subject to the latest standard configuration of the manufacturer.